Piston ring tool



Oct. 11, 1927 w. A. MADDEN PISTON RING TOOL Filed Sept. 14. 1926 Patented Oct. 11, 1927.

UNITED STATES WILLIE A. MADDEN, OF PALACIOS, TEXAS.

PISTON RING TOOL.

Application filed September 14, 1926. Serial 1510. 135,345.

This invention relates to new and useful improvements in piston ring tools constructed for use in the expanding of piston rings so as to facilitate the association or removal of the same with respect to engine pistons.

The primary object of the invention is to substantially improve and simplify tools of this general character that have been heretofore used to a certain extent but which have not proved entirely satisfactory for a number of reasons.

In the drawing wherein like reference characters indicate corresponding parts in both the views:

Figure 1 is a perspective of a piston ring tool constructed in accordance with the present invention. 1

Figure 2 is a fragmentary perspective showing the same as actually in use, and as being manipulated to expand a piston ring.

Now having particular reference to the drawing, my novel tool constitutes the provision of a pair of levers 5-5 that are preferably constructed of flat metal, andbeing of predetermined length and width. At a point forwardly of the center of these levers the opposite ends thereof are of outwardly converging relation and at the centers thereof the same are disposed in overlapping relation and pivotally interconnected by reason of a pivot pin 6. This outwardly diverging relation of the ends of the levers at a point forwardly of the center thereof provides for a pair of widely separated ends that are so constructed as to provide handles 7-7 the inward pressure upon which will separate the opposite ends of the levers without requiring great force by reason of the leverage ratio.

At the outer ends of the levers 5-5 there is formed depending lugs 8-8, the inner vertical edges of which are formed with forwardly extending flanges 9-9, the lugs of the levers extending vertically in opposite directions. 47

In actual use, the lugged ends of the levers are moved inwardly by forcing their handles 77 outwardly. The flanges 99 of these lugs are brought into alignment between the ends of the piston ring A and the 50 handle ends of the levers then forced inwardly. Obviously, the piston ring will be properly expanded and by reason of the depending lugs 8-8, the inner ends of the flanges 9-9 will be prevented from scoring thepiston ring grooves. Also, there will be little or no liability of. the tool slipping from the ring while the same is being Inanipulated in the application or removal of the same with respect to the piston.

It will thus be seen that Ihave provided a highly novel, simple, and efficient form of piston ring tool that is well adapted for all the purposes heretofore designated, and even though I have herein shown and de scribed the same as consisting of certain detail structural elements it is nevertheless to be understood that some changes may be had therein without affecting the spirit and scope of the appended claim.

Having thus described the invention, what I claim as new is:

In a piston ring tool of the class described, a pair of substantially flat levers pivotally interconnected intermediate their ends to 7 provide a pair of jaws, and operating handles therefor, vertical lugs formed on the forward ends of the jaws and disposed in opposite directions, and forwardly extending flanges formed at the inner vertical edges of the lugs and disposed at right angles to the lugs.

In testimony whereof I affix my signature.

WILLIE A. MADDEN. 

